FIBK

SEC source: 0000860413-23-000066 · wf-form4_167909332265846.xml · nonDerivative · entry 5

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,167

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000066 · wf-form4_167909332265846.xml · nonDerivative · entry 4

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,139

F2 · shares: Shares awarded in conjunction with a Performance Share Agreement in connection to Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-23-000066 · wf-form4_167909332265846.xml · nonDerivative · entry 3

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,586

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000066 · wf-form4_167909332265846.xml · nonDerivative · entry 2

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,476

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000066 · wf-form4_167909332265846.xml · nonDerivative · entry 1

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,876

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000064 · wf-form4_167908856601816.xml · nonDerivative · entry 5

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,589

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000064 · wf-form4_167908856601816.xml · nonDerivative · entry 4

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,807

F3 · shares: Shares awarded in conjunction with a Performance Share Agreement in connection to Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-23-000064 · wf-form4_167908856601816.xml · nonDerivative · entry 3

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,089

F2 · shares: Shares issued for no consideration pursuant to Registrant's Equity Incentive Plan, and vesting in two years following the year in which the grant is made.

SEC source: 0000860413-23-000064 · wf-form4_167908856601816.xml · nonDerivative · entry 2

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,031

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000064 · wf-form4_167908856601816.xml · nonDerivative · entry 1

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,161

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000062 · wf-form4_167908830329588.xml · nonDerivative · entry 5

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,870

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000062 · wf-form4_167908830329588.xml · nonDerivative · entry 4

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,143

F3 · shares: Shares awarded in conjunction with a Performance Share Agreement in connection to Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-23-000062 · wf-form4_167908830329588.xml · nonDerivative · entry 3

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,246

F2 · shares: Shares issued for no consideration pursuant to the Registrant's Equity Incentive Plan vesting in two years following the year in which the grant is made.

SEC source: 0000860413-23-000062 · wf-form4_167908830329588.xml · nonDerivative · entry 2

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,924

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000062 · wf-form4_167908830329588.xml · nonDerivative · entry 1

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,080

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000060 · wf-form4_167908781457322.xml · nonDerivative · entry 5

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,572

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000060 · wf-form4_167908781457322.xml · nonDerivative · entry 4

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,943

F3 · shares: Shares awarded in conjunction with a Performance Share Agreement in connection to Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-23-000060 · wf-form4_167908781457322.xml · nonDerivative · entry 3

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,723

F2 · shares: Shares were issued for no consideration pursuant to the Registrant's Equity Incentive Plan vesting in two years following the year in which the grant is made.

SEC source: 0000860413-23-000060 · wf-form4_167908781457322.xml · nonDerivative · entry 2

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,925

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000060 · wf-form4_167908781457322.xml · nonDerivative · entry 1

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,163

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000058 · wf-form4_167908649656825.xml · nonDerivative · entry 1

KNIERIEM KARLYN M · CIK 0001741432 · EVP, Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,755

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000056 · wf-form4_167908627161179.xml · nonDerivative · entry 1

ERKONEN SCOTT EDWARD · CIK 0001732894 · EVP, Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,715

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000054 · wf-form4_167908607996076.xml · nonDerivative · entry 2

Mutch Marcy D · CIK 0001653911 · Exec. Vice Pres. & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,877

F2 · shares: Shares issued for no consideration pursuant to the Registrant's Equity Incentive Plan, vesting in two years following the year in which the grant is made.

SEC source: 0000860413-23-000054 · wf-form4_167908607996076.xml · nonDerivative · entry 1

Mutch Marcy D · CIK 0001653911 · Exec. Vice Pres. & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,111

F1 · shares: Shares awarded in conjunction with a Performance Share Agreement in connection to Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-23-000050 · wf-form4_167891566646583.xml · nonDerivative · entry 2

Scott Jonathan R · CIK 0001361935 · Director · 10% owner

Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04 · CIK 0001908962 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,007,170

F1 · shares: Shares acquired by Harrison William Scott Trust (14,889), by Harper Grace Scott Trust (14,889), and by Holland Elizabeth Scott Trust (14,889), as a bona fide gift.

F2 · balance_after: Composed of 519,381 shares held of record by Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust and 50,000 shares held of record by Jonathan Scott's spouse.

F2 · ownership.nature: Composed of 519,381 shares held of record by Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust and 50,000 shares held of record by Jonathan Scott's spouse.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Jonathan R. Scott with the indication of direct or indirect ownership in Table I and Table II being made from Jonathan R. Scott's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0001493152-23-007694 · ownership.xml · nonDerivative · entry 2

SCOTT JULIE A · CIK 0001234619 · Director · 10% owner

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002 · CIK 0001908851 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Exempt Thomas W Scott Marital Trust 2 · CIK 0001909336 · 10% owner

Juliana Sarah Scott Rose Trust · CIK 0001909078 · 10% owner

Elizabeth Lauren Scott Rose Trust · CIK 0001908961 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

First Interstate Bank & Julie Scott Rose, Co-TTEEs of the Joan D Scott Trust Dtd 10/16/12 · CIK 0001908853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,517,349

F1 · shares: Composed of 89,333 shares disposed of by the Exempt Thomas W. Scott Marital Trust 2 to the Juliana Sarah Scott Rose Trust (22,333), to Elizabeth Lauren Scott Rose Trust (22,333), to Holland Elizabeth Scott Trust (14,889), to Harper Grace Scott Trust (14,889), and to the Harrison William Scott Trust (14,889) as a Bonafide gift.

F2 · balance_after: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 144,064 shares held of record by Juliana Sarah Scott Rose Trust, 144,064 shares held of record by Elizabeth Lauren Scott Rose Trust, 2 shares held of record by the Exempt Thomas W Scott Marital Trust 2.

F2 · ownership.nature: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 144,064 shares held of record by Juliana Sarah Scott Rose Trust, 144,064 shares held of record by Elizabeth Lauren Scott Rose Trust, 2 shares held of record by the Exempt Thomas W Scott Marital Trust 2.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Julie Scott Rose with the indication of direct or indirect ownership in Table I and Table II being made from Julie Scott Rose's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0001493152-23-007694 · ownership.xml · nonDerivative · entry 1

SCOTT JULIE A · CIK 0001234619 · Director · 10% owner

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002 · CIK 0001908851 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Exempt Thomas W Scott Marital Trust 2 · CIK 0001909336 · 10% owner

Juliana Sarah Scott Rose Trust · CIK 0001909078 · 10% owner

Elizabeth Lauren Scott Rose Trust · CIK 0001908961 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

First Interstate Bank & Julie Scott Rose, Co-TTEEs of the Joan D Scott Trust Dtd 10/16/12 · CIK 0001908853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,517,349

F1 · shares: Composed of 89,333 shares disposed of by the Exempt Thomas W. Scott Marital Trust 2 to the Juliana Sarah Scott Rose Trust (22,333), to Elizabeth Lauren Scott Rose Trust (22,333), to Holland Elizabeth Scott Trust (14,889), to Harper Grace Scott Trust (14,889), and to the Harrison William Scott Trust (14,889) as a Bonafide gift.

F2 · balance_after: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 144,064 shares held of record by Juliana Sarah Scott Rose Trust, 144,064 shares held of record by Elizabeth Lauren Scott Rose Trust, 2 shares held of record by the Exempt Thomas W Scott Marital Trust 2.

F2 · ownership.nature: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 76,037 shares held of record by Holland Elizabeth Scott Trust, 76,037 shares held of record by Harper Grace Scott Trust, 76,037 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 144,064 shares held of record by Juliana Sarah Scott Rose Trust, 144,064 shares held of record by Elizabeth Lauren Scott Rose Trust, 2 shares held of record by the Exempt Thomas W Scott Marital Trust 2.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Julie Scott Rose with the indication of direct or indirect ownership in Table I and Table II being made from Julie Scott Rose's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0001493152-23-006371 · ownership.xml · nonDerivative · entry 1

SCOTT JULIE A · CIK 0001234619 · Director · 10% owner

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002 · CIK 0001908851 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Exempt Thomas W Scott Marital Trust 2 · CIK 0001909336 · 10% owner

Juliana Sarah Scott Rose Trust · CIK 0001909078 · 10% owner

Elizabeth Lauren Scott Rose Trust · CIK 0001908961 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

First Interstate Bank & Julie Scott Rose, Co-TTEEs of the Joan D Scott Trust Dtd 10/16/12 · CIK 0001908853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,517,351

F3 · shares: The 288,000 shares were sold by the Non-Exempt Thomas W. Scott Marital Trust.

F1 · ownership.nature: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 61,148 shares held of record by Holland Elizabeth Scott Trust, 61,148 shares held of record by Harper Grace Scott Trust, 61,148 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 89,335 shares held of record by the Exempt Thomas W. Scott Marital Trust 2, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 121,731 shares held of record by Juliana Sarah Scott Rose Trust, and 121,731 shares held of record by Elizabeth Lauren Scott Rose Trust.

F2 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Julie Scott Rose with the indication of direct or indirect ownership in Table I and Table II being made from Julie Scott Rose's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0001493152-23-015459 · ownership.xml · nonDerivative · entry 1

SCOTT JULIE A · CIK 0001234619 · 10% owner

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002 · CIK 0001908851 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Exempt Thomas W Scott Marital Trust 2 · CIK 0001909336 · 10% owner

Juliana Sarah Scott Rose Trust · CIK 0001909078 · 10% owner

Elizabeth Lauren Scott Rose Trust · CIK 0001908961 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

First Interstate Bank & Julie Scott Rose, Co-TTEEs of the Joan D Scott Trust Dtd 10/16/12 · CIK 0001908853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,517,351

F3 · shares: The 288,000 shares were sold by the Non-Exempt Thomas W. Scott Marital Trust.

F1 · ownership.nature: Composed of 399,143 shares held of record by Julie A Scott-Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-02, 209,678 shares held of record by IXL Limited Liability Company, 61,148 shares held of record by Holland Elizabeth Scott Trust, 61,148 shares held of record by Harper Grace Scott Trust, 61,148 shares held of record by Harrison William Scott Trust 1,381,865 Shares held of record by the Non-Exempt Thomas W.Scott Marital Trust, 89,335 shares held of record by the Exempt Thomas W. Scott Marital Trust 2, 10,424 shares held of record by Joan D. Scott trust DTD 10-16-12, 121,731 shares held of record by Juliana Sarah Scott Rose Trust, and 121,731 shares held of record by Elizabeth Lauren Scott Rose Trust.

F2 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Julie Scott Rose with the indication of direct or indirect ownership in Table I and Table II being made from Julie Scott Rose's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0000860413-23-000041 · wf-form4_167718769735924.xml · nonDerivative · entry 2

Scott Jonathan R · CIK 0001361935 · Director · 10% owner

Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04 · CIK 0001908962 · 10% owner

IXL Ltd Liability Co · CIK 0001909090 · 10% owner

Harper Grace Scott Trust · CIK 0001908895 · 10% owner

Harrison William Scott Trust · CIK 0001908873 · 10% owner

Holland Elizabeth Scott Trust · CIK 0001908953 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 962,503

F1 · shares: Gift transaction by Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04.

F2 · balance_after: Composed of 519,381 shares held of record by Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04, 209,678 shares held of record by IXL Limited Liability Company, 61,148 shares held of record by Holland Elizabeth Scott Trust, 61,148 shares held of record by Harper Grace Scott Trust, 61,148 shares held of record by Harrison William Scott Trust and 50,000 shares held of record by Jonathan Scott's spouse.

F2 · ownership.nature: Composed of 519,381 shares held of record by Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04, 209,678 shares held of record by IXL Limited Liability Company, 61,148 shares held of record by Holland Elizabeth Scott Trust, 61,148 shares held of record by Harper Grace Scott Trust, 61,148 shares held of record by Harrison William Scott Trust and 50,000 shares held of record by Jonathan Scott's spouse.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with Jonathan R. Scott with the indication of direct or indirect ownership in Table I and Table II being made from Jonathan R. Scott's perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

SEC source: 0000860413-23-000037 · wf-form4_167658471699509.xml · nonDerivative · entry 1

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,230

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000039 · wf-form4_167658488215349.xml · nonDerivative · entry 1

Robbins Kristina · CIK 0001930719 · SVP, Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,180

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000035 · wf-form4_167658446806502.xml · nonDerivative · entry 1

Mutch Marcy D · CIK 0001653911 · Exec. Vice Pres. & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,555

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000033 · wf-form4_167658413788190.xml · nonDerivative · entry 1

Jensen Kirk D · CIK 0001697127 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,302

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000031 · wf-form4_167658311905484.xml · nonDerivative · entry 1

ERKONEN SCOTT EDWARD · CIK 0001732894 · EVP, Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,850

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000027 · wf-form4_167658267710978.xml · nonDerivative · entry 1

KNIERIEM KARLYN M · CIK 0001741432 · EVP, Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,965

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000029 · wf-form4_167658297723462.xml · nonDerivative · entry 1

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,258

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0000860413-23-000023 · wf-form4_167633649659985.xml · nonDerivative · entry 1

Asker Lorrie · CIK 0001965779 · Chief Banking Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,426

F1 · shares: Shares were issued for no consideration pursuant to the Registrants 2015 Equity Incentive Plan, and vest in three equal portions on February 10th of the first, second and third years following the year in which the grant is made.

SEC source: 0000860413-23-000016 · wf-form4_167580743395746.xml · nonDerivative · entry 1

BRANNEN JAMES · CIK 0001201565 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,385

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.69 to $36.73. The reporting person undertakes to provide to First Interstate BancSystem, Inc., any security holder of First Interstate BancSystem, Inc., or the staff of the Securities and Exchange Commission, upon, request, the full information regarding the number of shares sold at each separate price within the ranges set forth above.

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 8

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA - 6

Disclosed balance after: 250

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 7

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA - 5

Disclosed balance after: 500

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 6

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA - 4

Disclosed balance after: 760

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 5

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA -3

Disclosed balance after: 1,040

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 4

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA -2

Disclosed balance after: 1,040

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 3

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · As Custodian under UTMA -1

Disclosed balance after: 1,040

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 2

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,549

SEC source: 0000860413-22-000218 · wf-form4_167089113500205.xml · nonDerivative · entry 1

RILEY KEVIN P · CIK 0001408733 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,549

SEC source: 0001493152-24-000011 · ownership.xml · nonDerivative · entry 1

Scott Jeremy · CIK 0001803925 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Trust

Disclosed balance after: 69,317

F1 · kind: The reporting Person received these shares as a gift from a Family member on 12/7/22. This Transaction was overlooked and not originally disclosed on a form 4 or form 5.

SEC source: 0000860413-22-000216 · wf-form4_167046021748509.xml · nonDerivative · entry 3

SCOTT JAMES R · CIK 0001198533 · Director · 10% owner

Foundation for Community Vitality · CIK 0001908742 · 10% owner

J.S. Investments Limited Partnership · CIK 0001506291 · 10% owner

James F Heyneman Conservatorship, James Scott, Conservator · CIK 0001908854 · 10% owner

James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees · CIK 0001908844 · 10% owner

James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs · CIK 0001908712 · 10% owner

James R & Christine M Scott Foundation · CIK 0001909853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · see footnote

Disclosed balance after: 4,396,335

F1 · shares: Shares disposed of by James R. Scott's spouse to Foundation for Community Vitality, and shares acquired by Foundation for Community Vitality from James R. Scott's spouse, as a bona fide gift.

F4 · balance_after: Composed of 1,970,956 shares held of record by James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs, 17,764 shares held of record by James R Scott's 401k, 35,240 shares held of record by James R and Christine M Scott Foundation, 1,901,036 shares held of record by JS Investments Limited Partnership, 347,964 shares held of record by Foundation for Community Vitality, 73,002 shares held of record by James F Heyneman Conservatorship, James Scott, Conservator, 7,096 shares held of record by James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees, and 43,277 shares held of record by James R. Scott's spouse.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with James R. Scott with the indication of direct or indirect ownership in Tables I and II being made from James R. Scott's perspective unless expressly noted otherwise by footnote. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

F4 · ownership.nature: Composed of 1,970,956 shares held of record by James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs, 17,764 shares held of record by James R Scott's 401k, 35,240 shares held of record by James R and Christine M Scott Foundation, 1,901,036 shares held of record by JS Investments Limited Partnership, 347,964 shares held of record by Foundation for Community Vitality, 73,002 shares held of record by James F Heyneman Conservatorship, James Scott, Conservator, 7,096 shares held of record by James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees, and 43,277 shares held of record by James R. Scott's spouse.

SEC source: 0000860413-22-000216 · wf-form4_167046021748509.xml · nonDerivative · entry 2

SCOTT JAMES R · CIK 0001198533 · Director · 10% owner

Foundation for Community Vitality · CIK 0001908742 · 10% owner

J.S. Investments Limited Partnership · CIK 0001506291 · 10% owner

James F Heyneman Conservatorship, James Scott, Conservator · CIK 0001908854 · 10% owner

James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees · CIK 0001908844 · 10% owner

James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs · CIK 0001908712 · 10% owner

James R & Christine M Scott Foundation · CIK 0001909853 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · see footnote

Disclosed balance after: 4,395,746

F1 · shares: Shares disposed of by James R. Scott's spouse to Foundation for Community Vitality, and shares acquired by Foundation for Community Vitality from James R. Scott's spouse, as a bona fide gift.

F2 · balance_after: Composed of 1,970,956 shares held of record by James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs, 17,764 shares held of record by James R Scott's 401k, 35,240 shares held of record by James R and Christine M Scott Foundation, 1,901,036 shares held of record by JS Investments Limited Partnership, 346,786 shares held of record by Foundation for Community Vitality, 73,002 shares held of record by James F Heyneman Conservatorship, James Scott, Conservator, 7,096 shares held of record by James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees, and 43,277 shares held of record by James R. Scott's spouse.

F2 · ownership.nature: Composed of 1,970,956 shares held of record by James R Scott Trust, James R Scott & First Interstate Wealth Management Co-TTEEs, 17,764 shares held of record by James R Scott's 401k, 35,240 shares held of record by James R and Christine M Scott Foundation, 1,901,036 shares held of record by JS Investments Limited Partnership, 346,786 shares held of record by Foundation for Community Vitality, 73,002 shares held of record by James F Heyneman Conservatorship, James Scott, Conservator, 7,096 shares held of record by James F Heyneman Trust, James Scott & First Interstate Wealth Management Co-Trustees, and 43,277 shares held of record by James R. Scott's spouse.

F3 · ownership.nature: As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with James R. Scott with the indication of direct or indirect ownership in Tables I and II being made from James R. Scott's perspective unless expressly noted otherwise by footnote. The nature of beneficial ownership is described in detail by footnote for all reporting persons.